THE AGRICULTURAL NEWS. 



How Ticks 

 Reduce the Milk Yield 



■*$« 



An I mp ort an t Mitttcr for Owners of Dairy Herds 



In fer mnUcn h ta4«» /tarn Fanmn' !BaUrlin, Ne. 639, iuutJ officially by the 'DepattmtM of AgHeullure of the UnileJ SMm. 



T^ actial waount o( ktttm whidt tick* do lo cattle >« no longer a matter of mere conjecture. But the need of deEmte Lnowle^e <x> >'>>* *•^■■ 

 M dk* Oapartacni ts caoittt Moe 1 1| irillliir" on the effect of the tick on milk production and on the bofly weights of dairy calile. 



RESULTS OF EXPERIMENTS 



Fo(ly cowt were tSlillui iMo 2 lot* of 20, each of which was producing practically the same amount of milk, and wa> given the tauM Iced »mi 

 cMt ttl to avenge of 1 S2 dkya, daring tbe season most favourable to the development of ticks. 



One of the lot* ia each eiperHMBt was allowed to become infested with ticks, while another was kept free from them — in one case by sjinyi^g 

 and is anoliier by dtpfnf. 



1\c Bain results of tbe experiment were as follows : 



1. Cow* canying lick* <fid bM Iwld up s« wcH in milk Bow as cows kept free from ticks, and did not increase iheir flow of milk whea lb* 



feed was increased, as <Sd the tick-free cows. 



2. Al the doac «i tbe e^eriiteat the cows lightly infested with licks were producing 1 8' ';< less milk than the cows kept free frets liik, 



practically 1} pints less per cow per day. 



Sl Ai the eod of tbe experiments the cows heavily infested with ticks were producing 42.4Sc less milk than the tick free cows, or «eM^ 

 oBc-lialf gaDoB less per head per day. 



4> Owing the experimeat period of oae of the tests, which induded 20 cows, the heavily infested cowt lort an aTerage of 9.3 pow^ it 

 wtigbt, «4m)» ibc 6A Itm emn gaiaed an average of 44,2 pound*, although both were fed alike. 



THE COST OF FEEDING TICKS 



If a pea kaapM or iuayma^ with 20 cows, each producing 8 qudrts of milk a clay, should lei tlicni become lightly infested with ticks, the lift 

 fradaction wdbU be dacraaiad t» At artaal of If qaaru » day for each cow. 



At OS low an estiaa** ef 20 CMt*. a gaDoe or S cents, a quart, this woold amount to 7| cents, or ^ I .SO for ihe entire herd of 20 cows each dby. 



If the tick iiifi itafiaa were heavy 1^ reduction in the milk yield would be 3.5 quarts a day for each cow, e(|ual to 17 cents, in milk values. 



Tlii; woold "1HT* to $ 3.40 a day for tbe herd of 20 cows. 



Tbe foOovring i* as adaal tifntimm rf a dairyaMo in a very heavily tick infested territory, which strikingly illustrates how heaty it iks 

 am tl faeifiaf lielDi. 



Lilt ia the saaaCB «ll« lib eoat* ware covered with ticks, the cattle were dipped and the ticks killed. One week after dipping the 42 tmm 

 m %m berd fiv* 10 gaBkaa tt a& more tkaui before dipping. Tbii wai an increase of 16.6% and as the milk wai bringing 35 

 ^l*e A« evtnt 10 laBia* W* wartk 9 3.S0. Hence, as a resnlt of being freed from ticks by dipping, the same 42 cowt, oa the 

 Wat !• iiOMat As dairyoaa'* profits by $3.50 per day, or f 1277.50 per annum. 



IT COSTS MORE TO FEED TICKS THAN TO KILL THEM 



■ tt^tt tmim tdi woA tofstber tbe lidts caa be eradicated. Cotaplcle eradicaben. and not meraiy 

 TV» ^rr^ tank, or spraying machine, makes tbe work easy, effective and practical. 



COOPER'S CATTLE TICK DIP WEST 1NDIAN_AGENTS ; 



.,,,,.., , r I * 11 • /" . ■ . ANTHllK: Bt-nnetl. Brj.ion & Co.. 51. Jofcna. 



Hat rmceioxa the official approval of tne following l^ounlrtet . HAHAMA5: H. T. Brice. Nav«au, N.P. 



BARB*D<).^; Barliados Co-operative Cotton Ca.. Srl<>K<>te<>B. 

 Dalon of South Africa. NorlbcrD Rbnleida. Urazil. l<»>utobu>il. KIVHISI1 OUIANA: T. Oeddc.s <i rant. Ltd. 



N,»K»LuHl Swaailaod. Souttiarn Rhodexla. Madafiaacar. w.MUVH; *: Hon. M. A. I ramplon. UklJNADA : Thomson, Manaw * «*. 



' OIIADKI.OIUM:: The .-itatlon AKronomlguc de la fltiadelntin.. 



BritiKti F;»mi At' .. .. Cnrman Ea»t Afri< a. F'ortUjfuc'<,« lOast Afrti4i. |>-rnl-'^-l*itri-. .lAMAiCA: l>. Hciidcr.son dc Co., KJnK^ton. 



Por„.„.^W«.A,r,.. r^vpu Ar,.„t,n. RepuH.c, . Q«..Maod. ^„,,;jt'i\7.'«;.^:,:-^i;S^"^.1.."^ 



^.luiiHTj S',i.t«». f.r AnHTKa. Ni « liuuth Wal.i.. ."(T. MIT.S: 5. I.. Hor.slord & Co. .<T. LUCIA: Barnard Aono * €^. 



>- Castries. ST. VINCKNT: Corea Sc Co., Klntstawo. 



.Northern Td--il..n <■' Autitralia 1RIMDAU & TOBAtlO: T. Ocddea Orant. LtA 



AMIiklCAN' MPdlN I.SI.ANO.S: O. H. Sclimleicelow, 8t Crab. 



!V1an..(acturers : WILLIAM COOPER & NEPHEWS, Berkhamsted, EnglandL 



l.ltANtHf.v [oronlo. Cliiraru S»doe>, Melboumt AoritlaDil, Bni-no. ^ ir, i Mont. Vjd«., FNinta Artaa*. JokanDesbiirx, 



